oj.uz

Submission #732190

# Submission time Handle Problem Language Result Execution time Memory
732190 2023-04-28T15:43:45 Z Koful123 Političari (COCI20_politicari) C++17
65 / 70
 18 ms 5188 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl "\n"
#define ff first
#define ss second
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()

void solve(){

	int n,k;
	cin >> n >> k; --k;

	vector<vector<int>> v(n),vis(n);
	for(int i = 0; i < n; i++){
		v[i].assign(n,0); vis[i].assign(n,-1);
		for(int j = 0; j < n; j++){
			cin >> v[i][j];
		}
	}

	vector<int> cyc(1,0);

	int last = 0,cur = 1;
	while(vis[last][cur] == -1){
		vis[last][cur] = cyc.size() - 1;
		cyc.push_back(cur);
		int tmp = last; last = cur;
		cur = v[cur][tmp] - 1;	
	}

	cyc.pop_back();
	if(k <= vis[last][cur]){
		cout << 1 + cyc[vis[last][cur]] << endl;
		return;
	}

	else k -= vis[last][cur];

	vector<int> nw;
	for(int i = vis[last][cur]; i < cyc.size(); i++){
		nw.push_back(cyc[i]);
	}

	cout << 1 + nw[k % nw.size()] << endl;
}
 
signed main(){ 

	ios::sync_with_stdio(0);
	cin.tie(0);
 
	int t = 1;
//	cin >> t;
 
	while(t--)
		solve();
 	
	return 0;
}

Compilation message

politicari.cpp: In function 'void solve()':
politicari.cpp:43:32: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |  for(int i = vis[last][cur]; i < cyc.size(); i++){
      |                              ~~^~~~~~~~~~~~

Subtask #1
65.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 324 KB Output is correct
2 Correct 4 ms 1236 KB Output is correct
3 Correct 10 ms 3352 KB Output is correct
4 Correct 14 ms 4164 KB Output is correct
5 Correct 18 ms 5148 KB Output is correct
6 Correct 18 ms 5080 KB Output is correct
7 Incorrect 1 ms 212 KB Output isn't correct
8 Correct 2 ms 596 KB Output is correct
9 Correct 4 ms 1364 KB Output is correct
10 Correct 15 ms 4188 KB Output is correct
11 Correct 17 ms 5068 KB Output is correct
12 Correct 17 ms 5188 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 592 KB Output is correct